High pressure fluid container



Sept. 1, 1942.

5. E. ALLEN HIGH PRESSURE FLUID CONTAINER Filed April 10, 1940 PatentedSept. 1, 1942 HIGH. PRESSURE FLUID CONTAINER Scott E. Allen, Verona, N..12, assignor to C-O-Two Fire Equipment Company, Newark, N. 1., acorporation Delaware Application April 10,

This invention relates to improvements in high pressur fireextinguishing fluid containers.

Under the Interstate Commerce Commission regulations cylinderscontaining fire extinguishing fluid under high pressure must be retestedhydrostatically every five years. This requires removal of the fireextinguishing fluid from the 15340, Serial No. 328,807

container and recharging of the container. Withthe containers now in useit is necessary to disconnect the discharge head from the neck of thecontainer in order to remove the syphon tube so that the fluid used inhydrostaticaily testing the container may completely fill the containerfor testing and be drained from the container after the test has beenmade. The weakest part of the discharge head is at a point adjacent tothe upper end of the neck of the container and it frequently happensthat the discharge head is broken off at this point during an attempt todisconnect the discharge head-from the container. Also on account of theconstruction of the head it is diflicult to apply a wrench close to theneck of the container.

It is one of the objects of my invention to avoid the necessity ofremoving the discharge head from the container for the hydrostatictesting operation. In accordance with this invention this has beenavoided by providing the bottom end of the container with a smallthreaded opening to receive a threaded closure plug which may of thefluid within the container. Below the sealing disk the body ii may beprovided wi the customary safety plug as and the fixture 2!. Threaded inthe lower end of th body Ii and projecting close to the bottom end ofthe container is the usual syphon tube 23.

For the purpose of avoiding the necessity oi removing the discharge headand syphon tube from th container for hydrostatically testing thecontainer I provide the bottom end of the container with a smallthreaded opening it for receiving a threaded closure piugzt which may betapered as shown to provide a seal tight fit and which because of itssmall diameter is much more readily removed from the container than isthe large diameter threaded portion of the body threaded in the neck ofthe container. When it is desired to test the container the fireextinguishing fluid therein may be removed by discharging and then theclosure plug 2% may be removed and the container filled completely withwater for testing purposes. After the test has been made all of thewater can be drained out be removed to completely fill the containerwith water and to drain all of the water used in the testing operationfrom.the container so that the testing may be done without disconnectingthe discharge head from the neck of the container.

It is a further object of my invention to provide the container with afoot so as to support the bottom end of the container above the floor toprotect the threaded closure plug.

Other objects of the invention will appear from the followingdescription taken in connection with the single figure of the drawingwhich is a vertical diametral section through a container embodying myinvention.

A container of the usual shape is shown at l0. Mounted on the containeris the usual discharge head which comprises a body I I provided with areduced portion l2 threaded into the neck l3 of the container. This bodyis formed with a discharge bore M, which is normally closed by a sealingdisk l5 secured against a seat in the boreby a tubular plug IS, the headbeing provided with a puncturing element I'I operatedby a hand-wheel l8by means of which the sealing through the opening 28. After this is donethe closure plug 29 is threaded in the opening 28 and the container maythen be recharged in the usual way.

In order to make provision for supporting the container in uprightposition on the floor or the like, I provide the container with a footring it which may be of cylindrical form and may be shrunk on thecontainer. This foot is preferably continuous circumferentially and isof such height as to support the head of the closure plug 29 thenecessary distance from the floor to pre vent injury to the plug. Thefoot 30 also protects the closure plug 29 against sidewise impactsduring transportation. It also protects the threads of the closure plugagainst moisture, etc. which might cause the same to rust and interferewith the easy removal thereof.

While I have disclosed but one form of my invention, it is to beunderstood that modifications thereof will be suggested to thosefamiliar with this art after understanding my invention 1. Incombination with a container provided with a bottom wall having aconcave inner surface, a discharge head threaded in the neck of thecontainer and a syphon tube supported in the discharge head andprojecting to a point close disk may be punctured to permit thedischarge to the bottom wall of the container, of a closure plug for thecontainer threaded in the bottom wall of the container in a petitionopmlite the lower end of the syphon tube permitting the container to befilled completely with fluid for testing purposes without the removal01! the discharge head and yphon tube. and the container, syphon tubeand discharge head to be drain of all of the testing fluid.

2. In combination with a container. having a bottom wall with a concaveinner surface, a discharge head secured in the neck of the containerandasyphontube connectedin the'boreinthe diacharg

